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fix: properly set viewports and render targets
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@okwasniewski
okwasniewski committed Jul 15, 2024
1 parent 85b33a0 commit df25a07
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Showing 2 changed files with 101 additions and 4 deletions.
11 changes: 11 additions & 0 deletions src/renderer_mtl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -435,6 +435,11 @@ namespace bgfx { namespace mtl
[m_obj setBlendColorRed:_red green:_green blue:_blue alpha:_alpha];
}

void setVertexAmplificationCount(NSUInteger count, MTLVertexAmplificationViewMapping* viewMappings)
{
[m_obj setVertexAmplificationCount:count viewMappings:viewMappings];
}

void setCullMode(MTLCullMode _cullMode)
{
[m_obj setCullMode:_cullMode];
Expand Down Expand Up @@ -480,6 +485,11 @@ namespace bgfx { namespace mtl
[m_obj setViewport:_viewport];
}

void setViewports(MTLViewport _viewport[], NSInteger count)
{
[m_obj setViewports:_viewport count:count];
}

void setVisibilityResultMode(MTLVisibilityResultMode _mode, NSUInteger _offset)
{
[m_obj setVisibilityResultMode:_mode offset:_offset];
Expand Down Expand Up @@ -1061,6 +1071,7 @@ namespace bgfx { namespace mtl

#if BX_PLATFORM_VISIONOS
cp_layer_renderer_t m_layerRenderer;
cp_layer_renderer_configuration_t m_layerRendererConfiguration;
cp_frame_t m_frame;
cp_drawable_t m_drawable;
#else
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94 changes: 90 additions & 4 deletions src/renderer_mtl.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
#include "renderer_mtl.h"
#include "renderer.h"
#include <bx/macros.h>
#include <vector>

#if BX_PLATFORM_OSX
# include <Cocoa/Cocoa.h>
Expand Down Expand Up @@ -602,6 +603,9 @@ bool init(const Init& _init)

reset(m_renderPipelineDescriptor);
m_renderPipelineDescriptor.colorAttachments[0].pixelFormat = getSwapChainPixelFormat(m_mainFrameBuffer.m_swapChain);
#if BX_PLATFORM_VISIONOS
m_renderPipelineDescriptor.depthAttachmentPixelFormat = cp_layer_renderer_configuration_get_depth_format(m_mainFrameBuffer.m_swapChain->m_layerRendererConfiguration);
#endif
m_renderPipelineDescriptor.vertexFunction = m_screenshotBlitProgram.m_vsh->m_function;
m_renderPipelineDescriptor.fragmentFunction = m_screenshotBlitProgram.m_fsh->m_function;
m_screenshotBlitRenderPipelineState = m_device.newRenderPipelineStateWithDescriptor(m_renderPipelineDescriptor);
Expand Down Expand Up @@ -1041,7 +1045,8 @@ void updateTextureEnd() override
MTLPixelFormat getSwapChainPixelFormat(SwapChainMtl *swapChain)
{
#if BX_PLATFORM_VISIONOS
return MTLPixelFormatBGRA8Unorm_sRGB;
cp_layer_renderer_configuration_t layerConfiguration = cp_layer_renderer_get_configuration(swapChain->m_layerRenderer);
return cp_layer_renderer_configuration_get_color_format(layerConfiguration);
#else
return swapChain->m_metalLayer.pixelFormat;
#endif // BX_PLATFORM_VISIONOS
Expand Down Expand Up @@ -1294,6 +1299,34 @@ void blitSetup(TextVideoMemBlitter& _blitter) override
{
BX_UNUSED(_blitter);
}

#if BX_PLATFORM_VISIONOS
std::vector<MTLViewport> calculateViewPorts() {
std::vector<MTLViewport> viewports = std::vector<MTLViewport> {};
size_t viewCount = cp_drawable_get_view_count(m_mainFrameBuffer.m_swapChain->m_drawable);
for (int i = 0; i < viewCount; i++) {
cp_view_t view = cp_drawable_get_view(m_mainFrameBuffer.m_swapChain->m_drawable, i);
cp_view_texture_map_t texture_map = cp_view_get_view_texture_map(view);
viewports.push_back(cp_view_texture_map_get_viewport(texture_map));
}
return viewports;
}

void setVertexAmplification(RenderCommandEncoder rce) {
MTLVertexAmplificationViewMapping mapping0;
MTLVertexAmplificationViewMapping mapping1;

mapping0.renderTargetArrayIndexOffset = 0;
mapping1.renderTargetArrayIndexOffset = 1;

mapping0.viewportArrayIndexOffset = 1;
mapping1.viewportArrayIndexOffset = 2;

MTLVertexAmplificationViewMapping mappings[] = { mapping0, mapping1 };

rce.setVertexAmplificationCount(2, mappings);
}
#endif

void blitRender(TextVideoMemBlitter& _blitter, uint32_t _numIndices) override
{
Expand Down Expand Up @@ -1336,11 +1369,17 @@ void blitRender(TextVideoMemBlitter& _blitter, uint32_t _numIndices) override
m_renderCommandEncoderFrameBufferHandle = fbh;
MTL_RELEASE(renderPassDescriptor);

#if BX_PLATFORM_VISIONOS
auto viewports = calculateViewPorts();
rce.setViewports(viewports.data(), viewports.size());
setVertexAmplification(rce);
#else
MTLViewport viewport = { 0.0f, 0.0f, (float)width, (float)height, 0.0f, 1.0f };
rce.setViewport(viewport);

MTLScissorRect rc = { 0, 0, width, height };
rce.setScissorRect(rc);
#endif

rce.setCullMode(MTLCullModeNone);

Expand Down Expand Up @@ -1431,7 +1470,6 @@ void flip() override
if (NULL != frameBuffer.m_swapChain->m_drawable)
{
#if BX_PLATFORM_VISIONOS
cp_frame_start_submission(frameBuffer.m_swapChain->m_frame);
cp_drawable_encode_present(frameBuffer.m_swapChain->m_drawable, m_commandBuffer);
cp_frame_end_submission(frameBuffer.m_swapChain->m_frame);
#else
Expand Down Expand Up @@ -1879,9 +1917,22 @@ void setFrameBuffer(RenderPassDescriptor _renderPassDescriptor, FrameBufferHandl
: swapChain->currentDrawableTexture()
;
}
#if BX_PLATFORM_VISIONOS
Texture texture = cp_drawable_get_depth_texture(swapChain->m_drawable, 0);
_renderPassDescriptor.depthAttachment.texture = texture;
_renderPassDescriptor.stencilAttachment.texture = swapChain->m_backBufferStencil;

cp_layer_renderer_configuration_t layerConfiguration = cp_layer_renderer_get_configuration(swapChain->m_layerRenderer);
cp_layer_renderer_layout layout = cp_layer_renderer_configuration_get_layout(layerConfiguration);
if (layout == cp_layer_renderer_layout_layered) {
_renderPassDescriptor.renderTargetArrayLength = cp_drawable_get_view_count(swapChain->m_drawable);
} else {
_renderPassDescriptor.renderTargetArrayLength = 1;
}
#else
_renderPassDescriptor.depthAttachment.texture = swapChain->m_backBufferDepth;
_renderPassDescriptor.stencilAttachment.texture = swapChain->m_backBufferStencil;
#endif
}
else
{
Expand Down Expand Up @@ -2254,7 +2305,11 @@ void processArguments(
: 1
;
pd.colorAttachments[0].pixelFormat = swapChain->currentDrawableTexture().pixelFormat;
pd.depthAttachmentPixelFormat = swapChain->m_backBufferDepth.m_obj.pixelFormat;
#if BX_PLATFORM_VISIONOS
pd.depthAttachmentPixelFormat = cp_layer_renderer_configuration_get_depth_format(swapChain->m_layerRendererConfiguration);
#else
pd.depthAttachmentPixelFormat = swapChain->m_backBufferDepth.m_obj.pixelFormat;
#endif
pd.stencilAttachmentPixelFormat = swapChain->m_backBufferStencil.m_obj.pixelFormat;
}
else
Expand Down Expand Up @@ -2354,6 +2409,10 @@ void processArguments(

pd.vertexFunction = program.m_vsh->m_function;
pd.fragmentFunction = program.m_fsh != NULL ? program.m_fsh->m_function : NULL;
#if BX_PLATFORM_VISIONOS
auto properties = cp_layer_renderer_get_properties(m_mainFrameBuffer.m_swapChain->m_layerRenderer);
pd.maxVertexAmplificationCount = cp_layer_renderer_properties_get_view_count(properties);
#endif

VertexDescriptor vertexDesc = m_vertexDescriptor;
reset(vertexDesc);
Expand Down Expand Up @@ -3339,6 +3398,13 @@ void writeString(bx::WriterI* _writer, const char* _str)
{
cp_layer_renderer_t layerRenderer = (cp_layer_renderer_t)_nwh;
m_layerRenderer = layerRenderer;
m_layerRendererConfiguration = cp_layer_renderer_get_configuration(m_layerRenderer);

if (cp_layer_renderer_configuration_get_layout(m_layerRendererConfiguration) == cp_layer_renderer_layout_dedicated) {
BX_WARN(false, "Dedicated layer renderer layout is not supported.");
}

retain(m_layerRendererConfiguration);
retain(m_layerRenderer);
}
#else
Expand Down Expand Up @@ -3513,8 +3579,13 @@ void writeString(bx::WriterI* _writer, const char* _str)
release(m_backBufferDepth);
}

#if BX_PLATFORM_VISIONOS
if (m_drawable) {
m_backBufferDepth = cp_drawable_get_depth_texture(m_drawable, 0);
}
#else
m_backBufferDepth = s_renderMtl->m_device.newTextureWithDescriptor(desc);

#endif
if (NULL != m_backBufferStencil)
{
release(m_backBufferStencil);
Expand Down Expand Up @@ -3567,6 +3638,15 @@ void writeString(bx::WriterI* _writer, const char* _str)
m_frame = cp_layer_renderer_query_next_frame(m_layerRenderer);
if (m_frame)
{
cp_frame_timing_t timing = cp_frame_predict_timing(m_frame);
if (timing == nullptr) { return nullptr; }

cp_frame_start_update(m_frame);

cp_frame_end_update(m_frame);

cp_time_wait_until(cp_frame_timing_get_optimal_input_time(timing));
cp_frame_start_submission(m_frame);
m_drawable = cp_frame_query_drawable(m_frame);
}
#else
Expand Down Expand Up @@ -4390,6 +4470,11 @@ static void setTimestamp(void* _data)

rce.setTriangleFillMode(wireframe ? MTLTriangleFillModeLines : MTLTriangleFillModeFill);

#if BX_PLATFORM_VISIONOS
auto viewports = calculateViewPorts();
rce.setViewports(viewports.data(), viewports.size());
setVertexAmplification(rce);
#else
MTLViewport vp;
vp.originX = viewState.m_rect.m_x;
vp.originY = viewState.m_rect.m_y;
Expand All @@ -4407,6 +4492,7 @@ static void setTimestamp(void* _data)
};
rce.setScissorRect(sciRect);

#endif
if (BGFX_CLEAR_NONE != (clr.m_flags & BGFX_CLEAR_MASK)
&& !clearWithRenderPass)
{
Expand Down

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